diff options
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx/chip.c')
-rw-r--r-- | drivers/net/dsa/mv88e6xxx/chip.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index 393ee145ae0667..c1655e5952220a 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -2143,12 +2143,22 @@ static void mv88e6xxx_hardware_reset(struct mv88e6xxx_chip *chip) /* If there is a GPIO connected to the reset pin, toggle it */ if (gpiod) { + /* If the switch has just been reset and not yet completed + * loading EEPROM, the reset may interrupt the I2C transaction + * mid-byte, causing the first EEPROM read after the reset + * from the wrong location resulting in the switch booting + * to wrong mode and inoperable. + */ + if (chip->info->ops->get_eeprom) + mv88e6xxx_g2_eeprom_wait(chip); + gpiod_set_value_cansleep(gpiod, 1); usleep_range(10000, 20000); gpiod_set_value_cansleep(gpiod, 0); usleep_range(10000, 20000); - mv88e6xxx_g1_wait_eeprom_done(chip); + if (chip->info->ops->get_eeprom) + mv88e6xxx_g2_eeprom_wait(chip); } } |